See the data version history.
The data of old versions are available only if the versions are included in Yearly fixed datasets.

 CO₂ _ MQA5015 _ surface - insitu _ CSIRO _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-18	0016-5015-1001-01-01-9999 -2025-01-01-0016#21	The latest version
2023-07-20	0016-5015-1001-01-01-9999 -2023-07-19-1827#20	Included in Yearly Fixed Dataset 2024
2021-07-16	0016-5015-1001-01-01-9999 -2021-07-15-1202#18	Included in Yearly Fixed Dataset 2022